If you invade a true neutral, it and everyone else is now at war with you.
When you attack a strict neutral, only that territory joins the other side (with the exception of Mongolia being attacked by Japan). The rest of the strict neutrals become pro- the other side.
Yes, of course. Feel free to load them up FieldMarshal and if there are any improvements or corrections, let me know and I’ll fix em up quick. Glad you guys like em. :-D